Torque Straps?

You can make one from the $1.69 turnbuckles sold at Lowes or Home Depot. I used it and a couple of chain links. The chain attached to upper hook is held by the motor ground bolt & washer in the drivers side head and I drilled a hole in the K-frame for the lower hook to fit in. Or you can buy the nice Schumacher one for around $65.

If you have some serious HP, a 4spd car or the older pancake motor mounts you should run a torque strap on the left side of your motor.